Hello, I just got my new 20" iMac today. It's really great, however whenever I pop in a dvd of a movie that i have, for some reason it wont play. neither the dvd player nor vlc player can read it, and also, handbrake cant rip it. I tried with three different dvd's and none worked. Im hoping that it's something i'm doing wrong. the drive has no trouble reading music cd's and blanks.